CN207199755U - One kind is used for dual polar plates of proton exchange membrane fuel cell - Google Patents
One kind is used for dual polar plates of proton exchange membrane fuel cell Download PDFInfo
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- CN207199755U CN207199755U CN201721124171.0U CN201721124171U CN207199755U CN 207199755 U CN207199755 U CN 207199755U CN 201721124171 U CN201721124171 U CN 201721124171U CN 207199755 U CN207199755 U CN 207199755U
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- unipolar plate
- fuel cell
- exchange membrane
- proton exchange
- oxidant
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- 239000000446 fuel Substances 0.000 title claims abstract description 69
- 239000012528 membrane Substances 0.000 title claims abstract description 24
- 230000009977 dual effect Effects 0.000 title claims abstract description 16
- 239000007800 oxidant agent Substances 0.000 claims abstract description 30
- 230000001590 oxidative effect Effects 0.000 claims abstract description 30
- 239000002826 coolant Substances 0.000 claims abstract description 17
- 241000270295 Serpentes Species 0.000 claims description 4
- 230000005404 monopole Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000008676 import Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000036647 reaction Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000011712 cell development Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000011799 hole material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Fuel Cell (AREA)
Abstract
The utility model discloses one kind to be used for dual polar plates of proton exchange membrane fuel cell, including two block structure identical anode unipolar plates and negative electrode unipolar plate, unipolar plate includes being located at the entrance point and the port of export of both sides respectively, and the flow path area positioned at middle part, entrance point includes fuel inlet, cooling medium inlet and oxidant inlet, and the port of export includes fuel outlet, cooling medium outlet and oxidant outlet；The positive groove of unipolar plate and ridge form the front runner of unipolar plate, the front runner of anode unipolar plate is fuel flow channel, the front runner of negative electrode unipolar plate is oxidant flow channel, anode unipolar plate forms coolant flow channel after being bonded with negative electrode unipolar plate, oxidant flow channel and fuel flow channel are all serpentine flow path.The utility model Anodic unipolar plate and negative electrode unipolar plate are respectively provided with three serpentine flow paths, and the gas delivery pressure of bipolar plates is big and drainage is good, ensure the fuel concentration uniformity of bipolar plates, improve fuel availability, fuel cell reaction efficiency high.
Description
Technical field
It the utility model is related to field of fuel cell technology, and in particular to one kind is used for proton exchange membrane fuel cell metal
Bipolar plates.
Background technology
Proton Exchange Membrane Fuel Cells is using hydrogen or methanol as fuel, and oxygen or air are oxidant, will be stored in combustion
Chemical energy in material and oxidant is directly translated into the TRT of electric energy.Proton Exchange Membrane Fuel Cells has energy conversion effect
The advantages that rate is high, environment-friendly, started quickly at low temperature, has broad application prospects.Bipolar plates are pem fuel electricity
One of the core component in pond, there is support membrane electrode assembly, be uniformly distributed reacting gas, afflux conduction, discharge reaction generation water
And the critical function such as radiating.Metal material have good electrical and thermal conductivity, higher mechanical strength, cost it is low, be adapted to batch
The advantages that metaplasia is produced, therefore be considered as the ideal material of dual polar plates of proton exchange membrane fuel cell.Lin Zhengyu, Zhang Jie, Liu Bing
Written by Zheng Yongping《Material and the preparation technology summary of PEMFC bipolar plates》Analyze dual polar plates of proton exchange membrane fuel cell material
The advantage and disadvantage of material, and point out surface be modified metallic plate be dual polar plates of proton exchange membrane fuel cell development trend.
PEM small fuel cell metal double polar plates are negative electrode unipolar plate and anode list made of sheet metal
Pole plate is by welding or being bonded composition.The left and right sides of negative electrode unipolar plate and anode unipolar plate is equipped with fuel gas body cavity, cooling is situated between
Matter chamber and oxidant gas chamber, yin, yang unipolar plate both sides are equipped with the flow field area of convex-concave groove composition.According to load electricity consumption
Along with the annexes such as end plate form a fuel cell pack after a number of monocell of different requirement series connection of voltage.A piece of the moon
Pole plate and a piece of positive plate constitute one group of fuel battery double plates.It is general at present from high conduction performance, strong corrosion resistant,
High purity graphite or metal without gas permeability are cut into the piece of given size by certain thickness and shape need as bipolar plate material
Material, and bipolar plates are made in the distribution runner for going out in its Surface Machining fluid passage holes, gas and cooling agent.Bipolar plates in itself and its
Fluid passage holes above play a part of separating oxidant, reducing agent and cooling fluid；The distribution runner of core plays
Distribute reacting gas and export the effect of the water of cell reaction generation；The ridge in centre and the diffusion layer of membrane electrode closely connect
Touch, play a part of collecting and transmitting electronics.
At present, the bipolar plate structure of Proton Exchange Membrane Fuel Cells, there are snake type, interdigitated, parallel etc., wherein snakelike groove
Simple in construction, anode axial direction mass transfer is stable, and negative electrode drainage effect is preferable, and this structure is most widely used.But the groove of serpentine configuration
Stroke is longer, and larger linear loss causes pressure drop higher, can so give the air pump of supply to bring larger burden, and snakelike knot
The architectural characteristic that the groove of structure is arranged in parallel causes the downstream area concentration of groove relatively low, thus bipolar plates must be provided with it is new
Runner layout simple in construction, flow resistance is small, drainage is good, ensure the fuel concentration uniformity of whole bipolar plates, and then
Improve fuel availability.
Utility model content
The utility model mainly solving the technical problems that：One kind is provided and is used for proton exchange membrane fuel cell metal dual-polarity
Plate, it is made up of two pieces of identical unipolar plates, cost can be saved；Unipolar plate is set to serpentine flow path, and laying area is big, and drainage
It is good；Serpentine flow path is provided only with three, and can be effectively ensured in every runner has enough gas delivery pressures and less conveying
Resistance, ensure the fuel concentration uniformity of bipolar plates, improve fuel availability, fuel cell reaction efficiency high.
In order to solve the above technical problems, the technical scheme that the utility model uses is：A kind of proton that is used for is provided to hand over
Membrane fuel cell metal bipolar plate is changed, the bipolar plates include the anode unipolar plate and negative electrode unipolar plate to cooperate, the sun
Pole unipolar plate is two pieces of identical unipolar plates with the negative electrode unipolar plate, and the unipolar plate includes entering positioned at both sides respectively
Mouthful end and the port of export, and positioned at the connection entrance point at middle part and the flow path area of the port of export, the entrance point include fuel inlet,
Cooling medium inlet and oxidant inlet, the port of export include fuel outlet, cooling medium outlet and oxidant outlet；
The front and back of the unipolar plate is all provided with fluted and ridge, and positive ridge forms the groove at the back side, front
Groove form the back side ridge；The positive groove of unipolar plate and ridge form the front runner of unipolar plate；
The front runner of the anode unipolar plate is the fuel flow channel for connecting fuel inlet and fuel outlet；
The front runner of the negative electrode unipolar plate is the oxidant flow channel for connecting oxidant inlet and oxidant outlet；
After anode unipolar plate is bonded with negative electrode unipolar plate, the groove and ridge of two monopole backs, which are formed, passes through cooling medium
Coolant flow channel；
It is tightly connected between the anode unipolar plate and the negative electrode unipolar plate；
The oxidant flow channel and the fuel flow channel are all serpentine flow path and respectively at least provided with one, every snake
Shape runner is turned back and extended along perpendicular to the direction of entrance point and the line of the port of export back and forth all between entrance point and the port of export.
Further say, the mode for realizing the sealed connection is welding.
Further say, the unipolar plate is stainless steel unipolar plate, and thickness is 0.1~0.25mm.
Further say, the serpentine flow path is provided with three and three serpentine flow paths all along the direction of gas inlet and outlet
It is parallel and be uniformly distributed.
Further say, the length of three serpentine flow paths be respectively 840~845mm, 843~845mm and 840~
845mm。
Further say, the section of the serpentine flow path is trapezoidal shape, between two side walls of the trapezoidal groove
Ultimate range is 1~1.2mm, and the groove depth of the trapezoidal groove is 0.5~1mm.
Further say, the bipolar plates periphery is provided with location division, and the location division is determined including what two diagonal were set
The positioning shrinkage pool that position boss and two diagonal are set.
Further say, the positioning boss is round boss and a height of 0.5~0.6mm.
Further say, the bipolar plates are used for the fuel cell pack less than or equal to 2KW.
The beneficial effects of the utility model are：
The utility model realizes fuel, oxidant and cooling using the relative fitting of two pieces of identical monopole backs
It the respective circulation of medium, can be prepared using a secondary mould, significantly shorten the process exploitation time, reduce mold design and processing charges
With reducing manufacturing process complexity；Bipolar plates main flow paths region is designed using serpentine flow path, and laying area is big, is adapted to car
With the large area requirement of fuel cell；Three serpentine channels are only designed, can be effectively ensured in every runner has enough gas
Discharge pressure and less transporting resistance, and drainage is good, ensures the fuel concentration uniformity of bipolar plates, improves fuel utilization
Rate, fuel cell reaction efficiency high.
Brief description of the drawings
Fig. 1 is structural representation one of the present utility model (anode unipolar plate is not bonded with negative electrode unipolar plate)；
Fig. 2 is structural representation two of the present utility model (anode unipolar plate is bonded with negative electrode unipolar plate)；
Fig. 3 is the sectional view of serpentine flow path of the present utility model；
The reference of each several part is as follows in figure：
Bipolar plates 1, fuel inlet 11, cooling medium inlet 12, oxidant inlet 13, fuel outlet 14, cooling medium go out
Mouth 15, oxidant outlet 16, fuel flow channel 17, oxidant flow channel 18, location division 19, anode unipolar plate 2, negative electrode unipolar plate 3, snake
Shape runner 4, trapezoidal groove two side walls between ultimate range b1 and trapezoidal groove groove depth H1.
Embodiment
Following examples are used to illustrate the utility model, but are not limited to the scope of the utility model.Without departing substantially from this
In the case of utility model spirit and essence, the modifications or substitutions made to the utility model method, step or condition belong to
The scope of protection of the utility model.
Embodiment：One kind is used for dual polar plates of proton exchange membrane fuel cell, as Figure 1-Figure 2, the bipolar plates 1
Anode unipolar plate 2 and negative electrode unipolar plate 3 including mutual cooperation, the anode unipolar plate are two pieces complete with the negative electrode unipolar plate
Exactly the same unipolar plate, the unipolar plate include being located at the entrance point and the port of export of both sides, and the connection positioned at middle part respectively
The flow path area of entrance point and the port of export, the entrance point include fuel inlet 11, cooling medium inlet 12 and oxidant inlet 13,
The port of export includes fuel outlet 14, cooling medium outlet 15 and oxidant outlet 16；
The front and back of the unipolar plate is all provided with fluted and ridge, and positive ridge forms the groove at the back side, front
Groove form the back side ridge；The positive groove of unipolar plate and ridge form the front runner of unipolar plate；
The front runner of the anode unipolar plate 2 is the fuel flow channel 17 for connecting fuel inlet and fuel outlet；
The front runner of the negative electrode unipolar plate 3 is the oxidant flow channel 18 for connecting oxidant inlet and oxidant outlet；
After anode unipolar plate is bonded with negative electrode unipolar plate, the groove and ridge of two monopole backs, which are formed, passes through cooling medium
Coolant flow channel；
It is tightly connected between the anode unipolar plate and the negative electrode unipolar plate；
The oxidant flow channel and the fuel flow channel are all serpentine flow path 4 and respectively at least provided with one, described in every
Serpentine flow path is turned back back and forth all between entrance point and the port of export and edge is prolonged perpendicular to the direction of entrance point and the line of the port of export
Stretch.
There is changeover portion, the section of the changeover portion is circular arc between the side wall of the groove and bottom surface.
The mode for realizing the sealed connection is welding.
The unipolar plate is stainless steel unipolar plate, and thickness is 0.1~0.25mm.
The serpentine flow path is provided with three and three serpentine flow paths are parallel and uniform all along the direction of gas inlet and outlet
Distribution.
The length of three serpentine flow paths is respectively 840~845mm, 843~845mm and 840~845mm.
The section of the serpentine flow path 4 is trapezoidal shape, the ultimate range b1 between two side walls of the trapezoidal groove
For 1~1.2mm, the groove depth H1 of the trapezoidal groove is 0.5~1mm..
Two side walls of the serpentine flow path are close to center position from top to down, the width of the bottom land of the serpentine flow path
Less than the width of the notch of the serpentine flow path.
The bipolar plates periphery is provided with location division 19, and the location division includes the positioning boss and two that two diagonal are set
The positioning shrinkage pool that individual diagonal is set.
The positioning boss is round boss and a height of 0.5~0.6mm..
The bipolar plates are used for the fuel cell pack less than or equal to 2KW.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those skilled in the art, other various forms of changes or change can also be made on the basis of the above description
It is dynamic.Here without exhaustive.And the guarantor that the obvious changes or variations thus extended out is created still in the utility model
Protect among scope.
Claims (9)
1. one kind is used for dual polar plates of proton exchange membrane fuel cell, the bipolar plates (1) include the anode list being connected with each other
Pole plate (2) and negative electrode unipolar plate (3), it is characterised in that：The anode unipolar plate is two pieces of complete phases with the negative electrode unipolar plate
Same unipolar plate, the unipolar plate include being located at the entrance point and the port of export of both sides, and the connection import positioned at middle part respectively
End and the flow path area of the port of export, the entrance point include fuel inlet (11), cooling medium inlet (12) and oxidant inlet
(13), the port of export includes fuel outlet (14), cooling medium outlet (15) and oxidant outlet (16)；
The front and back of the unipolar plate is all provided with fluted and ridge, and positive ridge forms the groove at the back side, positive recessed
Groove forms the ridge at the back side；The positive groove of unipolar plate and ridge form the front runner of unipolar plate；
The front runner of the anode unipolar plate (2) is the fuel flow channel (17) for connecting fuel inlet and fuel outlet；
The front runner of the negative electrode unipolar plate (3) is the oxidant flow channel (18) for connecting oxidant inlet and oxidant outlet；
After anode unipolar plate is bonded with negative electrode unipolar plate, the groove and ridge of two monopole backs are formed by the cold of cooling medium
But runner；
It is tightly connected between the anode unipolar plate and the negative electrode unipolar plate；
The oxidant flow channel and the fuel flow channel are all serpentine flow path (4) and respectively at least provided with one, every snake
Shape runner is turned back and extended along perpendicular to the direction of entrance point and the line of the port of export back and forth all between entrance point and the port of export.
2. one kind according to claim 1 is used for dual polar plates of proton exchange membrane fuel cell, it is characterised in that：Realize
The mode of the sealed connection is welding.
3. one kind according to claim 1 is used for dual polar plates of proton exchange membrane fuel cell, it is characterised in that：It is described
Unipolar plate is stainless steel unipolar plate, and thickness is 0.1~0.25mm.
4. one kind according to claim 1 is used for dual polar plates of proton exchange membrane fuel cell, it is characterised in that：It is described
Serpentine flow path is provided with three and three serpentine flow paths are all parallel along the direction of gas inlet and outlet and be uniformly distributed.
5. one kind according to claim 4 is used for dual polar plates of proton exchange membrane fuel cell, it is characterised in that：Three
The length of the serpentine flow path is respectively 840~845mm, 843~845mm and 840~845mm.
6. one kind according to claim 1 is used for dual polar plates of proton exchange membrane fuel cell, it is characterised in that：It is described
Serpentine flow path (4) is that section is trapezoidal trapezoidal groove, and the ultimate range (b1) between two side walls of the trapezoidal groove is 1
~1.2mm, the groove depth (H1) of the trapezoidal groove is 0.5~1mm.
7. one kind according to claim 1 is used for dual polar plates of proton exchange membrane fuel cell, it is characterised in that：It is described
Bipolar plates periphery is provided with location division (19), and the positioning boss and two diagonal that the location division is set including two diagonal are set
The positioning shrinkage pool put.
8. one kind according to claim 7 is used for dual polar plates of proton exchange membrane fuel cell, it is characterised in that：It is described
Positioning boss is round boss and a height of 0.5~0.6mm.
9. one kind according to claim 1 is used for dual polar plates of proton exchange membrane fuel cell, it is characterised in that：It is described
Bipolar plates are used for the fuel cell pack less than or equal to 2KW.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721124171.0U CN207199755U (en) | 2017-09-04 | 2017-09-04 | One kind is used for dual polar plates of proton exchange membrane fuel cell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721124171.0U CN207199755U (en) | 2017-09-04 | 2017-09-04 | One kind is used for dual polar plates of proton exchange membrane fuel cell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207199755U true CN207199755U (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721124171.0U Expired - Fee Related CN207199755U (en) | 2017-09-04 | 2017-09-04 | One kind is used for dual polar plates of proton exchange membrane fuel cell |
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| Country | Link |
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| CN (1) | CN207199755U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411770A (en) * | 2018-10-29 | 2019-03-01 | 德州新动能铁塔发电有限公司 | A kind of bipolar plate for fuel cell and fuel cell |
-
2017
- 2017-09-04 CN CN201721124171.0U patent/CN207199755U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411770A (en) * | 2018-10-29 | 2019-03-01 | 德州新动能铁塔发电有限公司 | A kind of bipolar plate for fuel cell and fuel cell |
| CN109411770B (en) * | 2018-10-29 | 2020-07-17 | 德州新动能铁塔发电有限公司 | Bipolar plate for fuel cell and fuel cell |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180406 |